<template>
  <a-spin :spinning="spinning" tip="数据加载中...">
    <div class="card-list" ref="content">
      <a-list :grid="{ gutter: 24, lg: 3, md: 2, sm: 1, xs: 1 }" :dataSource="dataSource" :loading="false">
        <a-list-item slot="renderItem" slot-scope="item">
          <a-card :hoverable="true" @click="joinExam(item.id)">
            <a-card-meta>
              <div style="margin-bottom: 3px" slot="title">{{ item.title }}</div>
              <a-avatar class="card-avatar" slot="avatar" :src="item.avatar | imgSrcFilter" size="large" />
              <div class="meta-content" slot="description">{{ item.content }}</div>
            </a-card-meta>
            <template class="ant-card-actions" slot="actions">
              <a>满分：{{ item.score }}分</a>
              <a>限时：{{ item.elapse }}分钟</a>
            </template>
          </a-card>
        </a-list-item>
      </a-list>
    </div>
  </a-spin>
</template>

<script>
import { getExamCardList } from '../../api/exam'

export default {
  name: 'ExamCardList',
  data() {
    return {
      description: '您可以随意点击下面的考试卡片开始一场属于您的考试',
      extraImage: 'https://gw.alipayobjects.com/zos/rmsportal/RzwpdLnhmvDJToTdfDPe.png',
      dataSource: [],
      spinning: true
    }
  },
  methods: {
    joinExam(id) {
      const routeUrl = this.$router.resolve({
        path: `/exam/${id}`
      })
      window.open(routeUrl.href, '_blank')
    }
  },
  mounted() {
    // 从后端数据获取考试列表，适配前端卡片
    getExamCardList()
      .then(res => {
        console.log(res)
        if (res.code === 0) {
          this.dataSource = res.data
        } else {
          this.$notification.error({
            message: '获取考试列表失败',
            description: res.msg
          })
        }
      })
      .catch(err => {
        // 失败就弹出警告消息
        this.$notification.error({
          message: '获取考试列表失败',
          description: err.message
        })
      })
      .finally(() => {
        this.spinning = false
      })
  }
}
</script>

<style lang="less" scoped>
.card-avatar {
  width: 48px;
  height: 48px;
  border-radius: 48px;
}
.card-list {
  min-height: 60vh;
}
.ant-card-actions {
  background: #f7f9fa;

  li {
    float: left;
    text-align: center;
    margin: 12px 0;
    color: rgba(0, 0, 0, 0.45);
    width: 50%;

    &:not(:last-child) {
      border-right: 1px solid #e8e8e8;
    }

    a {
      color: rgba(0, 0, 0, 0.45);
      line-height: 22px;
      display: inline-block;
      width: 100%;

      &:hover {
        color: #1890ff;
      }
    }
  }
}

.new-btn {
  background-color: #fff;
  border-radius: 2px;
  width: 100%;
  height: 188px;
}

.meta-content {
  position: relative;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  height: 64px;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
}
</style>
